Thermal-oxidation mechanism of dioctyl adipate base oil
作者： Xuzheng Qian , Yaling Xiang , Hongfei Shang , Bingxue Cheng , Shengpeng Zhan
DOI: 10.1007/S40544-015-0099-X
关键词:
摘要: The ester base oil of dioctyl adipate (DOA) was oxidized in an oven at 200 °C for 30 h, and variations the physicochemical tribological properties were studied. To investigate thermal-oxidation mechanism, products analyzed by gas chromatography–mass spectrometry (GC−MS), process simulated using visual reactive force field molecular dynamics (ReaxFF MD). results indicated that total acid number (TAN) increased significantly because presence 14% carboxylic acids low weight monoesters. improved formation strongly polar acids. Additionally, increase kinematic viscosity limited due to high polymerization degradation products. Thermal-oxidative mechanisms proposed combining ReaxFF MD simulations GC−MS results.
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